The producer price indexes measure changes in the prices received, or paid, by producers of commodities and providers of services. In Australia they generally relate to prices for goods and services as they affect businesses, for example, the price of goods used as input to or output from the manufacturing sector, the price of materials used as input to the building industry and, more recently, the price of services provided by the property and business services, and transport (freight) and storage industries. This contrasts with the CPI which measures changes in the retail prices paid by consumers, as explained earlier in Producer price indexes.